Quickly - An easy way to develop applications for Ubuntu and package them in a deb format.

Ubuntu Karmic Koala is available in 25 languages.

Linux kernel 2.6.31

Ubuntu One - Integrates your Ubuntu machine with the cloud providing you free 2 GB of space to store and synchronize all your data like Tomboy notes, imortant files, contacts et al. More space is available for a nominal price of $10 / month.